I need help about reclaiming savvol space to the storage pool, we use replicator V2 and I already know the solution:

delete all ckpt and rep ckpt and after you can relaunch a full copy over the WAN Of course!

The last part disturb me a little and I found in the release notes for the version 6.0.41.4 a new feature named "File system replication with common base checkpoints", but i do not see how to implement it in order to avoid a full copy. If we understand well, we need to create a local replica and checkpoint user on each fs involved and after use this checkpoint user to do a replication refresh.

Prior to this feature, there were checkpoints dedicated to preserve a common base between a replication pair. The common base was created by the replication software. In this new functionality, a user can use regular checkpoints to create a common base between two NAS objects. The purpose of this feature is to create a common base between a replication pair that had no prior replication relationship. If they did not have a prior relationship, replication software would not have created a common base. Now, a user can do that and then create a replication session between the two without the need of a full copy for initialization.

The details of this feature are explained in the release note that you referenced. Is there anything specific that you were looking for?

We still have the same issue during the first local replication. Apparently it would be caused by the param smartsnaplimit, this param has been modified 1year ago but we are still waiting an answer of EMC support to be sure.